Adjustable shelf



FIG. 1 is an exploded perspective top front view of the adjustable shelf of the present invention;

FIG. 2 is an exploded perspective bottom front view of the present invention;

FIG. 3 is a perspective top view of the present invention in collapsed form;

FIG. 4 is a perspective bottom view of the present invention in collapsed form;

FIG. 5 is a top side view of the present invention in collapsed form;

FIG. 6 is a bottom side view of the present invention in collapsed form;

FIG. 7 is a front side view of the present invention in collapsed form;

FIG. 8 is a back side view of the present invention in collapsed form;

FIG. 9 is a right side view of the present invention in collapsed form;

FIG. 10 is a left side view of the present invention in collapsed form;

FIG. 11 is a top perspective view of the present invention in expanded form;

FIG. 12 is a bottom perspective view of the present invention in expanded form;

FIG. 13 is a top side view of the present invention in expanded form;

FIG. 14 is a bottom side view of the present invention in expanded form;

FIG. 15 is a front side view of the present invention in expanded form;

FIG. 16 is a back side view of the present invention in expanded form;

FIG. 17 is a right side view of the present invention in expanded form; and,

FIG. 18 is a left side view of the present invention in expanded form.

The broken lines illustrate portions of the adjustable shelf that form no part of the claimed design. 

CLAIM The ornamental design for the adjustable shelf, as shown and described. 